@misc{indiciae4484666e5b9a,
  title = {Time differences in the formation of meteorites as determined from the ratio of lead-207 to lead-206},
  author = {M. Tatsumoto and R. J. Knight and C.J. Allegre},
  year = {1973},
  doi = {10.1126/science.180.4092.1279},
  url = {https://pubs.usgs.gov/publication/70010919},
  note = {Source identifier: 70010919}
}